High Performance EOR Adjuvant for Oilfield: How Natural Surfactants Are Changing Enhanced Oil Recovery

In the quest for maximizing crude oil extraction from mature reservoirs, Enhanced Oil Recovery (EOR) has become a game-changer. Among various EOR techniques, chemical flooding – especially surfactant flooding – stands out for its ability to mobilize trapped oil after primary and secondary recovery. However, traditional synthetic surfactants often come with environmental concerns, high costs, and thermal instability. Enter SQ-SUR 625W, a naturally derived, high-performance EOR adjuvant that combines eco-friendliness with exceptional efficiency.

Why EOR Needs a Smarter Adjuvant

After primary (natural pressure) and secondary (water/gas injection) recovery, up to 60–70% of the original oil in place remains trapped in reservoir pores due to capillary forces and interfacial tension. Surfactant flooding reduces the interfacial tension between oil and water, allowing oil droplets to flow freely. But conventional surfactants face challenges: they degrade at high temperatures, adsorb strongly onto rock surfaces (wasting chemicals), and persist in the environment. Moreover, many are derived from petrochemicals, adding to the carbon footprint.

SQ-SUR 625W addresses these pain points head-on. As a natural high-molecular polymer with anionic surfactant properties, it delivers robust performance where synthetics fall short.

The core advantages of SQ-SUR 625W as an EOR adjuvant are as follows:

• Naturally Derived, Fully Biodegradable 
• Exceptional Thermal Stability 
• Ultra-Low Interfacial Tension 
• Cost-Effective: 10% Reduction in Raw Material Cost 
• Excellent Emulsifying & Dispersing Performance 
• Low Organic Chlorine

The table below summarizes its wide range of capabilities.:

Main Application	Core Function	Advantages / Effects
Surfactant Flooding	Reduce oil-water interfacial tension, making oil more "slippery" and easier to detach from rock pores.	Efficiently strips crude oil from rock surfaces; a core technology for enhanced oil recovery.
Foam Flooding	Generate foam to block high-permeability zones, diverting the flooding fluid to oil-bearing areas and expanding sweep efficiency.	Improves macroscopic sweep efficiency, especially suitable for heterogeneous reservoirs.
Emulsification Flooding	Emulsify high-viscosity heavy oil into low- viscosity oil-in-water (O/W) emulsion to improve flowability.	Effectively mobilizes heavy and extra-heavy oil resources that are difficult to recover by conventional water flooding.
Alkali Surfactant Polymer (ASP) / SP Flooding	Act as a core surfactant component, working synergistically with polymers and alkalis to achieve “1+1>2” effects.	Synergistic performance can significantly increase oil recovery with better techno-economic benefits.
Improve Raw Material Cost Efficiency	Natural sourcing and efficient production reduce raw material cost by 10% compared to conventional surfactants.	Lowers chemical flooding material costs, making more previously marginal projects economically viable.

How It Compares to Synthetic Surfactants

Feature	Synthetic Surfactants	SQ-SUR 625W (Natural)
Source	Petrochemicals	Renewable natural polymer
Biodegradability	Poor to moderate	Complete
Thermal stability (＞150°C)	Often unstable	Stable
Environmental impact	High	Low
Raw material cost	Baseline	10% lower
Organic chlorine	Variable, often high	≤20 ppm

Real-World Application Scenarios

• Scenario 1: High-Temperature Reservoir (>120°C)

Traditional surfactants degrade within weeks. SQ-SUR 625W maintains interfacial tension reduction for months, ensuring sustained oil mobilization.

• Scenario 2: Environmentally Sensitive Area (Offshore or Near Reserves)

Leakage or produced water discharge must be non-toxic. The fully biodegradable nature of SQ-SUR 625W meets zero-discharge aspirations.

• Scenario 3: Cost-Constrained Mature Field

With 10% lower raw material cost, operators can deploy larger injection volumes or extend flood life without breaking the budget.

The Bigger Picture: Greener EOR

As the oil industry faces mounting pressure to decarbonize and reduce environmental footprint, every aspect of production is under scrutiny. EOR chemicals have traditionally been a weak link – but that’s changing. SQ-SUR 625W proves that high performance and ecological responsibility can coexist. It offers a pathway to responsible intensification: extracting more from existing reservoirs while reducing harm to the planet.

For oilfield operators seeking a high-performance EOR adjuvant that cuts costs, withstands high temperatures, and protects the environment, SQ-SUR 625W is a compelling choice. Its natural origin, full biodegradability, 10% raw material cost reduction, and superior emulsifying power make it a standout in the crowded surfactant market. Whether you are planning a surfactant flood, foam flood, or emulsification flood, this natural polymer deserves a spot in your chemical toolkit.

To learn more about SQ-SUR 625W or request samples, contact our technical team.

Contact E-mail：sales@sqmaterials.com

Contact Phone：+86 20 3180 1834